Her burial (as none of their children were named Mary; Dec 2016, TFPL, except that it now appears that the eldest was Mary and she was, with all her sisters, a spinster at the time of her father’s death in 1819, so that the 1815 death must have been the mother) (Birmingham & Midland Soc for Gen & Her):

First name(s): Mary
Last name: POWYS
Date of burial: 17 Jun 1817
Age at death:   56
Calculated year of birth: 1761
Place of burial: Cheddleton
Dedication: St Edward
County: Staffordshire
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Her precise death date is taken from a mention of this in the will of her husband Edward Powys.
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TFPL, Sep 2004, from Ancestry.com:

Shropshire: Condover - Parish Registers, Lichfield Diocese
Condover Marriage Register. Marriages From 1754 to 1787, Inclusive.  
  Condover Marriage Register. Marriages From 1754 to 1787, Inclusive.  
   No. 3.  
County: Shropshire  
Country: England  
02 Oct 1778 The Rev. Edward Powys, Clerk, of St. Mary in the town of Shrewsbury, Clk., & Mrs. Mary Hodges, lic., by Thos. Kipling, Clk. W: Josa. Blakeway, Richd. Podmore, Clerk.  
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